Jaroslav Šoun

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Caloplaca sterilis is a corticolous (bark-dwelling), crustose lichen belonging to the family Teloschistaceae, described in 2011. It is primarily found in steppe and sand dune habitats in the Black Sea region, and has been recorded from Bulgaria, Romania, southwest Russia, and Ukraine. Caloplaca sterilis is characterised by tiny squamules/areoles with contrasting pale greyish-green to greenish soredia. It is easily overlooked and challenging to identify when completely sorediate and sterile (i.e., without any apothecia), especially as its soredia do not contain the typical Sedifolia-grey

Lichenostigma svandae is a species of lichenicolous (lichen-dwelling) fungus in the family Phaeococcomycetaceae. This microscopic parasitic fungus appears as soot-grey flecks on its host lichen species Acarospora cervina, forming dark, net-like strands of fungal threads that anchor themselves to the lichen surface with short root-like offshoots. Described as new to science in 2007 from specimens collected in Crimea, it is known from sun-exposed limestone outcrops in Europe and southwestern Asia.

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Fominiella skii is a species of crustose lichen in the family Teloschistaceae. It forms a very thin, pale greyish crust on bark and twigs, bearing small yellow-orange fruiting bodies. The species was originally described in 2011 as Caloplaca skii and has since been transferred to the genus Fominiella. It occurs in dry coastal and semi-arid habitats in southern Europe and the Near East.

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